:root{--ink:#3B2F2F;--accent:#9A5B3D;--soft:#FFF1E6;--bg:#FFFCF8;--line:#d7e1ea;--muted:#52616b}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:#17212b;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;line-height:1.75;font-size:16px}.site-header{position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;gap:24px;align-items:center;padding:14px max(20px,calc((100% - 1120px)/2));background:rgba(255,255,255,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}a{color:var(--accent)}.brand{display:flex;gap:10px;align-items:center;color:var(--ink);font-weight:800;text-decoration:none}.mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff}.site-header nav{display:flex;gap:18px}.site-header nav a{text-decoration:none;color:var(--ink);font-weight:650}.hero{max-width:1120px;margin:auto;padding:64px 24px 30px;display:grid;grid-template-columns:1fr .9fr;gap:42px;align-items:center}.eyebrow{display:inline-block;color:var(--accent);font-weight:800;letter-spacing:.08em}.hero h1{font-size:clamp(2rem,5vw,4.3rem);line-height:1.05;letter-spacing:-.04em;margin:.3em 0}.hero p{font-size:1.08rem;color:var(--muted)}.hero-card{background:var(--ink);color:#fff;border-radius:28px;padding:28px;box-shadow:0 24px 50px rgba(20,40,60,.18)}main section{max-width:1120px;margin:0 auto;padding:48px 24px}.calculator{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:0 12px 35px rgba(20,40,60,.08)}.section-title{max-width:760px;margin-bottom:24px}.section-title h2{font-size:clamp(1.6rem,3vw,2.4rem);margin:.2em 0}.calc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}.calc-grid label{display:grid;gap:6px;font-weight:700}.calc-grid input{width:100%;padding:13px;border:1px solid #9fb0bd;border-radius:10px;font:inherit;background:#fff}button{margin-top:18px;background:var(--accent);color:#fff;border:0;border-radius:10px;padding:13px 22px;font:inherit;font-weight:800;cursor:pointer}.result{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}.result div{background:var(--soft);border-radius:14px;padding:16px}.result span,.result strong{display:block}.result strong{font-size:1.35rem;color:var(--ink)}.steps,.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.step,.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.card{text-decoration:none;color:inherit}.card span{color:var(--accent);font-weight:800}.card h3{margin:.35em 0}.note{border-left:5px solid var(--accent);background:var(--soft);padding:18px;border-radius:0 14px 14px 0}.article-layout{max-width:1120px;margin:auto;padding:54px 24px;display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:38px}.article h1{font-size:clamp(2rem,4vw,3.4rem);line-height:1.15;letter-spacing:-.03em}.lead{font-size:1.12rem;color:var(--muted)}.summary{background:var(--soft);border-radius:18px;padding:22px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;background:#fff}th,td{padding:13px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{color:var(--ink)}aside{position:sticky;top:90px;height:max-content;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}aside a{display:block;margin:8px 0}.check-list li{margin:.5em 0}footer{display:flex;justify-content:space-between;gap:30px;padding:36px max(24px,calc((100% - 1120px)/2));background:var(--ink);color:#fff}footer a{color:#fff;margin-left:16px}.policy{max-width:850px;margin:auto;padding:60px 24px}.source-list{columns:2}@media(max-width:800px){.hero,.article-layout{grid-template-columns:1fr}.hero{padding-top:36px}.steps,.cards,.result{grid-template-columns:1fr}.site-header{align-items:flex-start}.site-header nav{display:none}aside{position:static}.source-list{columns:1}footer{display:block}footer a{display:block;margin:8px 0}}.article h2{margin-top:2.2em;line-height:1.35}.formula{background:#fff;border:1px solid var(--line);border-left:5px solid var(--accent);border-radius:12px;padding:18px;font-weight:750;color:var(--ink)}.scenario-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.scenario-grid>div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}.record-list{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 24px;background:var(--soft);border-radius:14px;padding:18px 18px 18px 38px}@media(max-width:800px){.scenario-grid,.record-list{grid-template-columns:1fr}}
/* intent pages */
.intent-tool{margin:34px 0;padding:26px}.intent-result{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.intent-result small{display:block;margin-top:6px;color:var(--muted);font-size:.82rem}.schedule-block{grid-column:1/-1;background:#fff!important;border:1px solid var(--line);overflow:auto}.schedule-block table{margin-top:10px}.article section.calculator{padding:26px}.intent-index{background:linear-gradient(135deg,var(--soft),#fff);border-block:1px solid var(--line)}.intent-index .card{box-shadow:0 8px 22px rgba(20,40,60,.06)}@media(max-width:800px){.intent-tool{padding:18px;margin-inline:0}.intent-result{grid-template-columns:1fr}}